def __save(self, target_path, pages):
pdf_surface = cairo.PDFSurface(target_path, self.__page_format[0],
self.__page_format[1])
pdf_context = cairo.Context(pdf_surface)
quality = float(self.__quality) / 100.0
for page in [self.doc.pages[x] for x in range(pages[0], pages[1])]:
img = page.img
if (img.size[0] < img.size[1]):
(x, y) = (min(self.__page_format[0], self.__page_format[1]),
max(self.__page_format[0], self.__page_format[1]))
else:
(x, y) = (max(self.__page_format[0], self.__page_format[1]),
min(self.__page_format[0], self.__page_format[1]))
pdf_surface.set_size(x, y)
new_size = (int(quality * img.size[0]), int(quality * img.size[1]))
img = img.resize(new_size, PIL.Image.ANTIALIAS)
scale_factor_x = x / img.size[0]
scale_factor_y = y / img.size[1]
scale_factor = min(scale_factor_x, scale_factor_y)
img_surface = image2surface(img)
pdf_context.identity_matrix()
pdf_context.scale(scale_factor, scale_factor)
pdf_context.set_source_surface(img_surface)
pdf_context.paint()
pdf_context.show_page()
return target_path
def __init__(self, position, image):
Drawer.__init__(self)
self.size = image.size
self.img_size = self.size
self.position = position
self.angle = 0
self.surface = image2surface(image)
def add_chunk(self, line, img_chunk):
# big images take more time to draw
# --> we resize it now
img_size = fit(img_chunk.size, self.size)
if (img_size[0] <= 0 or img_size[1] <= 0):
return
img_chunk = img_chunk.resize(img_size)
surface = image2surface(img_chunk)
self.surfaces.append((line * self.ratio, surface))
self.on_tick()
def do(self):
self.emit('page-loading-start')
try:
img = self.page.img
if self.size:
img = img.resize(self.size, PIL.Image.ANTIALIAS)
img.load()
self.emit('page-loading-img', image2surface(img))
finally:
self.emit('page-loading-done')
def print_page_cb(self, print_op, print_context, keep_refs={}):
"""
Called for printing operation by Gtk
"""
ORIENTATION_PORTRAIT = 0
ORIENTATION_LANDSCAPE = 1
SCALING = 2.0
img = self.img
(width, height) = img.size
# take care of rotating the image if required
if print_context.get_width() <= print_context.get_height():
print_orientation = ORIENTATION_PORTRAIT
else:
print_orientation = ORIENTATION_LANDSCAPE
if width <= height:
img_orientation = ORIENTATION_PORTRAIT
else:
img_orientation = ORIENTATION_LANDSCAPE
if print_orientation != img_orientation:
logger.info("Rotating the page ...")
img = img.rotate(90)
# scale the image down
# XXX(Jflesch): beware that we get floats for the page size ...
new_w = int(SCALING * (print_context.get_width()))
new_h = int(SCALING * (print_context.get_height()))
logger.info("DPI: %fx%f" %
(print_context.get_dpi_x(), print_context.get_dpi_y()))
logger.info("Scaling it down to %fx%f..." % (new_w, new_h))
img = img.resize((new_w, new_h), PIL.Image.ANTIALIAS)
surface = image2surface(img)
keep_refs['surface_cache_' + str(self.page_nb)] = surface
# .. and print !
cairo_context = print_context.get_cairo_context()
cairo_context.scale(1.0 / SCALING, 1.0 / SCALING)
cairo_context.set_source_surface(surface, 0, 0)
cairo_context.paint()
def do(self):
self.__cond.acquire()
try:
self.can_run = True
self.emit('page-loading-start')
self.__cond.wait(0.1)
finally:
self.__cond.release()
try:
if not self.can_run:
return
use_thumbnail = True
if self.size[1] > (BasicPage.DEFAULT_THUMB_HEIGHT * 1.5):
use_thumbnail = False
if not self.can_run:
return
if not use_thumbnail:
img = self.page.img
else:
img = self.page.get_thumbnail(BasicPage.DEFAULT_THUMB_WIDTH,
BasicPage.DEFAULT_THUMB_HEIGHT)
if not self.can_run:
return
if self.size != img.size:
img = img.resize(self.size, PIL.Image.ANTIALIAS)
if not self.can_run:
return
img.load()
if not self.can_run:
return
self.emit('page-loading-img', image2surface(img))
finally:
self.emit('page-loading-done')
